Total natural gas rig count in the US (including conventional gas drilling) Shale gas is natural gas that is found trapped within shale formations. Shale gas has become an increasingly important source of natural gas in the United States since the start of this century, and interest has spread to potential gas shales in the rest of the world.
A stressor is a chemical or biological agent, environmental condition, external stimulus or an event that causes stress to an organism.[1]
Chapter 9 STRESS 1. Stress occurs when a situation overwhelms a personâs perceived ability to meet the demands of that situation. 2. Stressors- events that push us to the limit or exceed our ability to manage the situation at hand. The focus on the situations that cause stress is known as the stimulus view of stress.